Installation For Vertical Termination - Desa (V)T32N series Owner's Operation And Installation Manual

INSTALLATION FOR VERTICAL
TERMINATION
Note: Vertical restrictor must be installed in
all vertical installations.
1. Determine the route your vertical venting
will take. If ceiling joists, roof rafters or
other framing will obstruct the venting
system, consider an offset (see Figure 19)
to avoid cutting load bearing members.
Note: Pay special attention to these instal-
lation instructions for required clearances
(air space) to combustibles when passing
through ceilings, walls, roofs, enclosures,
attic rafters, etc. Do not pack air spaces
with insulation. Also note maximum verti-
cal rise of the venting system and any
maximum horizontal offset limitations.
2. Set the fireplace in desired location. Drop
a plumb line down from the ceiling to the
position of the fireplace exit flue. Mark the
center point where the vent will penetrate
the ceiling. Drill a small locating hole at
this point.
Drop a plumb line from the inside of the
roof to the locating hole in the ceiling.
Mark the center point where the vent will
penetrate the roof. Drill a small locating
hole at this point.
Wall Strap
Figure 19 - Offset with Wall Strap and 45°
Elbows
14
VENTING INSTALLATION
Roof Flashing
45° Elbow
Ceiling Firestop
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Continued
Flat Ceiling Installation
1. Cut a 10" square hole in the ceiling using
the locating hole as a center point. The
opening should be framed to 10" x 10"
inside dimensions, as shown in Figure 9
on page 9 using framing lumber the same
size as the ceiling joists. If the area above
the ceiling is an insulated ceiling or attic
space, nail firestop from the top side. This
prevents loose insulation from falling into
the required clearance space. If the area
above the ceiling is a living space, install
firestop below the framed hole. The firestop
should be installed with no less than three
nails per side (see Figure 20).
2. Assemble the desired lengths of pipe
and elbows necessary to reach from the
fireplace flue up through the firestop. Be
sure all pipe and elbow connections are
fully twist-locked (see Figure 8, page 9).
3. Cut a hole in the roof using the locating
hole as a center point. (Cover any exposed
open vent pipes before cutting hole in roof.)
The 10" x 10" hole must be measured on
the horizontal; actual length may be larger
depending on the pitch of the roof. There
must be a 1" clearance from the vent pipe to
combustible materials. Frame the opening
as shown in Figure 9, page 9.
4. Connect a section of pipe and extend up
through the hole.
If area above is an attic or insulated area,
install firestop above framed hole.
If area above is a living space, install
firestop below framed hole.
Figure 20 - Installing Firestop
111986-01F